I keep this function sourced from my .bashrc—it is incredibly useful.

spell.sh

spell() {
    # /me futilely avoids googling words to find their correct spelling
    local candidates oldifs word array_pos
    oldifs="$IFS"
    IFS=':'

    # Parse the apsell format and return a list of ":" separated words
    read -a candidates <<< "$(printf "%s\n" "$1" \
        | aspell -a \
        | awk -F':' '/^&/ {
            split($2, a, ",")
            result=""
            for (x in a) {
                gsub(/^[ \t]/, "", a[x])
                result = a[x] ":" result
            }
            gsub(/:$/, "", result)
            print result
        }')"

    # Reverse number and print the parsed bash array because the list comes
    # out of gawk backwards
    for item in "${candidates[@]}"; do
        printf '%s\n' "$item"
    done \
        | tac \
        | nl \
        | less -FirSX

    printf "[ $(tput setaf 2)?$(tput sgr0) ]\t%s" \
        'Enter the choice (empty to cancel, 0 for input): '
    read index

    [[ -z "$index" ]] && return
    [[  "$index" == 0 ]] && word="$1"

    [[ -z "$word" ]] && {
        array_pos=$(( ${#candidates[@]} - index ))
        word="${candidates[$array_pos]}"
    }

    [[ -n "$word" ]] && {
        printf "$word" | xsel -p
        printf "Copied '%s' to clipboard!\n" "$word"
    } || printf "[ $(tput setaf 1):($(tput sgr0) ] %s\n" 'No match found'


    IFS="$oldifs"
}